2509998 has 16 divisors (see below), whose sum is σ = 5036160. Its totient is φ = 833976.

The previous prime is 2509993. The next prime is 2510017. The reversal of 2509998 is 8999052.

2509998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2493 + ... + 3351.

It is an arithmetic number, because the mean of its divisors is an integer number (314760).

2^2509998 is an apocalyptic number.

2509998 is an abundant number, since it is smaller than the sum of its proper divisors (2526162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2509998 is a wasteful number, since it uses less digits than its factorization.

2509998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 2509998 is about 1584.2973205810. The cubic root of 2509998 is about 135.9015651613.

The spelling of 2509998 in words is "two million, five hundred nine thousand, nine hundred ninety-eight".